Heating device containing alpha fluid in its heating element



A. PAIS June 3, 192.0.`

HEATING DEVICE CONTAINING A FLUID IN ITS HEATING ELEMENT Filed Dec. 13, 1926 Fig. 4

/NvENToe ALEX/1 DRE PAIS BY A Tra/@NE y Patented June 3, 1930 NETE STATES Para ALEXANDRE PAIS, or ucnannsfr', Rui/'rama Application filed December 13, 1926, Serial No. 154,637, and. innustra .Tulyl 26, 1926.

My invention relates to heating devices of that class in which a heat accumulator comprising a metal block is heated externally by some suitable source of heat and is provided with channels or passages filled with a temperature equalizing medium such as water, alcohol, or ammonia which is partly evaporated on supplying heat to the heat accumulator. rlhe saturated vapours thus formed till the system of passages or channels in the heat accumulator thereby transmitting the heat supplied to the heat accumulator uniformly to the entire mass of such accumulator. hus all parts of the heat accumulator have at any given moment the same temperature whether the accumulator receives heat from the outside or transmits heat to the outside.

The object of my invention is to so provide a heat accumulator for heating devices ot' this class in which the passages or channels are so arranged, that the heat receiving surface of the accumulator is increased as compared with the heat transmitting surface thereof whereby the heat supplied to the accumulator by the source of heat is particularlv eiiiciently utilized.

lilith this obj ect in view my invention consists in that the metal block serving as a heat accumulator is provided with attachments in the form of ribs project-ing into the tlues such ribs being provided with passages extending therethrough. The said attachments or ribs may be made integral by casting or forging with the parts of the block serving for transmitting the heat, or they may be welded or otherwise connected thereto in such a manner as to secure an e'icient conduction of heat. The passages of the said attachments are connected to the passages of the heat transmitting parts so as to form a closed system.

The annexed drawing shows by way of example a constructional form of my invention as applied to a cooking stove. Fig. 1 is a longitudinal section of the stove, Fig. 2 is a transverse section ot the same on the line Il, H Fig. 1, and Fig. 3 is a section on the line HI, III Fig. 2.

1 is a heat insulating casing and 2, 3, 4 are three flat portions of the heat accumulating block arranged vertically and separated from each other by spaces 5 and 6. The central block portion 3 is cut away at its left hand end in 1 so as to form a chamber 8 at thebottom oiAIY which the grate 9 or" the turnace is located. rlhe combustionv gases vof the furnace pass through 'the spaces 5, 6 which thus form fiues to the smoke passage ,to the stack diagrammatically shown at 18".- 13 is a cover for'shujtting the smoke passage. The central plate-,3 is'provided on top with a recess 14 establishing communication between thetwo iiues 5, 6, Each of the latemal block portions is provided with a longitudinal passage 10 and 11 respectively. The central block portion 3 is likewise provided with a longitudinal passage 12 extending to the rear end of the chamber 8 and tightly shut oirfrom this chamber. Another longitudinal passage 15 is provided in the central portion 3 abovey the chamber 8. The passage 15 communicates with the passage 12 by a passage 16. Above the vertical block portions 2, 8, 4 a horizontal plate 18 is provided which contains a series of transverse passages '19 and three longitudinal passages 2O communicating therewith.

I rThe passages 11, 12, 15 of the vertical portions 3, 4 communicate with the passages 20 of the horizontal plate 18 by pipes 23, 24, 25, 25 located outside the said portions. Similarly the passagelO of the vertical portion 2 communicates with the passages 19 and 20. On the heat transmitting plate 18 plates 30, 31 are mounted which are provided witlipassa ges 28, 29 and enclose a baking chamber 35 closed in front by a supporting plate 32. rEhe passages 28, 29 communicate with each other by pipes 36 located outside the plates and by pipes 88 with the passages at the other plates. The passages are partly filled with water, alcohol or ammonia and then permanently sealed. W hen the vertical portions 2, 3, 4 are heated, the medium filled into the passages is partly evaporated, thus transmitting the heat uniformly through all the communieating passages to the entire mass ot the metal blocks. The outer face of the horizontal block portion 18 and the outer faces vof the plates enclosing the baking chamber are covered with heat insulating plates which are in part fixed and in part removable.

In the construction of the heat accumulating metal block the vertical portions 2, 3, 4 5 and the bottom face of the horizontal portion 18 serve for receiving heat. Thereby a very large heat receiving surface is obtained which together with the outer heat insulation secures a very satisfactory utilization of the 1G heat furnished by the source or heat.

I/Vhat I claim is: l. In a heating device flues having therein a heat accumulating metal block comprising a horizontal flat portion and a plurality of vertical flat portions projecting from such horizontal portion and constituting walls of the said lines, and passages in the said portions, such passages communicating with each other and forming a closed system per- 20 manently filled with a temperature equalizing medium.

2. In a heating device ues having therein a heat accumulating metal block comprising a horizontal flat portion and a plurality of g5 vertical flat portions projecting downward from such horizontal portion and constituting walls of the said ues, plates mounted on the top side of the said horizontal flat portion and enclosing a chamber, and passages so in the said horizontal and vertical flat portions and inat least part of the said plates, such passages communicating with each other and forming a closed system permanently lilled with a temperature equalizing medium. In testimony whereof I aiiiX my signature.

ALEXANDRE PAIS. 

